CPAN RT

To require that any child of this node will always render on every page.
Normally,
a node will not render on a given page if a node before it has triggered a pagebreak.
ALWAYS nodes will always render on every page.

Primarily,
this is used as a base class for HEADER and FOOTER.
However,
you might want something to always render on every page outside the header and footer areas.
For example,
a watermark.